Click4
13-08-2015, 07:40 PM
Hi, just wondered if anybody else has experienced an odd leak like this, I'm stumped presently.
It's a Renault trafic / Vauxhall vivaro / Nissan primastar (all the same)
It was gassed up originally by somebody else, leaked out, and they couldn't find a leak.
I came out had a look, condenser had seen better days and had what looked like oil stained patches on it, removed condenser, checked it 1 night under uv and there was uv traces corresponding to where the patches were... So concluded condenser leak.
Swapped condenser and drier, went back a week later because owner was complaining the airflow wasnt great from vents.
Pressures on suction and discharge all normal, condensation on suction pipe, cold air at vents with chill.
Then 3 days later owner tells me aircon has packed in, I went back and system was completely empty.
Checked system and found no leaks. Except the split rubber seal in valve cap... So concluded that it had leaked due to a possible leak on shrader valve after I'd disturbed it.
Changed valves, new seals in caps.
Pressure tested it, no bubbles anywhere, held pressure, no uv dye.
Vacuumed it, vacuum sounded good, no sounds like it was sucking in air anywhere.
Refilled it.
A week later, I asked owner how aircon was... He replied all working fine.
Then 5 days after that, now complaining aircon not working again. Gone back and completely empty again.
I don't understand how it can go a week, still blow biting cold, still have condensation on suction pipe... Then few days after that suddenly dump it's gas with no evidence of leakage.
I don't know right now if it's a leak eluding me, a pressure relief valve problem on compressor or owner deliberately dumping the gas to get me back because he wants me to fix his airflow problem as well. But either way it's leaked somewhere but not leaving a trace and leaking suddenly after holding up for a week.
It's a Renault trafic / Vauxhall vivaro / Nissan primastar (all the same)
It was gassed up originally by somebody else, leaked out, and they couldn't find a leak.
I came out had a look, condenser had seen better days and had what looked like oil stained patches on it, removed condenser, checked it 1 night under uv and there was uv traces corresponding to where the patches were... So concluded condenser leak.
Swapped condenser and drier, went back a week later because owner was complaining the airflow wasnt great from vents.
Pressures on suction and discharge all normal, condensation on suction pipe, cold air at vents with chill.
Then 3 days later owner tells me aircon has packed in, I went back and system was completely empty.
Checked system and found no leaks. Except the split rubber seal in valve cap... So concluded that it had leaked due to a possible leak on shrader valve after I'd disturbed it.
Changed valves, new seals in caps.
Pressure tested it, no bubbles anywhere, held pressure, no uv dye.
Vacuumed it, vacuum sounded good, no sounds like it was sucking in air anywhere.
Refilled it.
A week later, I asked owner how aircon was... He replied all working fine.
Then 5 days after that, now complaining aircon not working again. Gone back and completely empty again.
I don't understand how it can go a week, still blow biting cold, still have condensation on suction pipe... Then few days after that suddenly dump it's gas with no evidence of leakage.
I don't know right now if it's a leak eluding me, a pressure relief valve problem on compressor or owner deliberately dumping the gas to get me back because he wants me to fix his airflow problem as well. But either way it's leaked somewhere but not leaving a trace and leaking suddenly after holding up for a week.